From 608b7ee9e18044cacdf87e37d6de3764361cf829 Mon Sep 17 00:00:00 2001
From: Corey Johnson <cj@github.com>
Date: Thu, 8 Nov 2012 12:21:20 -0800
Subject: [PATCH] Throw an exception if OnigRegExp fails to create a regex from
 a pattern

---
 native/v8_extensions/onig_reg_exp.mm | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/native/v8_extensions/onig_reg_exp.mm b/native/v8_extensions/onig_reg_exp.mm
index 71c991b14..ba1657b1f 100644
--- a/native/v8_extensions/onig_reg_exp.mm
+++ b/native/v8_extensions/onig_reg_exp.mm
@@ -76,9 +76,13 @@ bool OnigRegExp::Execute(const CefString& name,
     return true;    
   }
   else if (name == "buildOnigRegExp") {
-    CefRefPtr<CefBase> userData = new OnigRegExpUserData(arguments[0]);
+    CefRefPtr<CefV8Value> pattern = arguments[0];
+    CefRefPtr<OnigRegExpUserData> userData = new OnigRegExpUserData(pattern);
+    if (!userData->m_regex) {
+      exception = std::string("Failed to create OnigRegExp from pattern '") + pattern->GetStringValue().ToString() + "'";
+    }
     retval = CefV8Value::CreateObject(NULL);
-    retval->SetUserData(userData);
+    retval->SetUserData((CefRefPtr<CefBase>)userData);
     return true;
   }